APPARATUS AND METHOD FOR SENSING BONE POSITION AND MOTION
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United States of America Patent
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Issued Date -
Jan 30, 2014
app pub date -
May 2, 2013
filing date -
May 2, 2012
priority date (Note) -
Abandoned
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Abstract
This invention describes a novel photoplethysmographic system captures a joint shape change representing different positions of bones and tendons near the joint. At least one light source illuminates a joint interface and the light reflected from the joint location is captured by a photodiode sensor. Motions and positions of the bones surrounding the joint can be determined. One joint includes the knuckle. Finger lift-up motions, finger put-down motions, and finger bending events can be determined by monitoring a sensing area at the knuckle joint.
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